Amphiscapha
| Amphiscapha Temporal range: Penn - L Perm | |
|---|---|
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda or ?Monoplacophora |
| Superfamily: | Euomphaloidea |
| Family: | Euomphalidae |
| Genus: | Amphiscapha J.B. Knight, 1942 |
Amphiscapha is a fossil gastropod mollusk, or less likely a monoplacophoran, genus from the Pennsylvanian and Lower Permian of North and South America, included in the family Euomphalidae. It is sometimes regarded as a subgenus of Straparollus, S. (Amphiscapha) Knight 1942
Description
The shell in this genus is hyper strophic discoidal, with a flat base and a concave upper side. The location of what is presumed to be the exhalent channel is marked by a smooth or rugose ridge along the upper-outer margin, which lies along the edge of a flat to concave outer rim.
References
- J. B. Knight et al. 1960. Systematic descriptions; Treatise on Invertebrate Paleontology; Part I, Mollusca(1): I192.
- Paleobiology database info on Amphiscapha